NXP Semiconductors Kinetis KE1xZ256, Reference Manual

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CMPx_C0 field descriptions (continued)
Field Description
Enables the CFF interrupt from the CMP. When this field is set, an interrupt will be asserted when CFF is
set.
0 Interrupt is disabled.
1 Interrupt is enabled.
26
CFR
Analog Comparator Flag Rising
Detects a rising-edge on COUT, when set, during normal operation. CFR is cleared by writing 1 to it.
During Stop modes, CFR is level sensitive
0 A rising edge has not been detected on COUT.
1 A rising edge on COUT has occurred.
25
CFF
Analog Comparator Flag Falling
Detects a falling-edge on COUT, when set, during normal operation. CFF is cleared by writing 1 to it.
During Stop modes, CFF is level sensitive .
0 A falling edge has not been detected on COUT.
1 A falling edge on COUT has occurred.
24
COUT
Analog Comparator Output
Returns the current value of the Analog Comparator output, when read. The field is reset to 0 and will read
as C0[INVT] when the Analog Comparator module is disabled, that is, when C0[EN] = 0. Writes to this
field are ignored.
23–16
FPR
Filter Sample Period
Specifies the sampling period, in bus clock cycles, of the comparator output filter, when C0[SE] = 0.
Setting FPR to 0x0 disables the filter. Filter programming and latency details are provided in the CMP
functional description. This field has no effect when C0[SE ]= 1. In that case, the external SAMPLE signal
is used to determine the sampling period.
15
SE
Sample Enable
At any given time, either SE or WE can be set. If a write to this register attempts to set both, then SE is set
and WE is cleared. However, avoid writing ones to both bit locations because this "11" case is reserved.
0 Sampling mode is not selected.
1 Sampling mode is selected.
14
WE
Windowing Enable
At any given time, either SE or WE can be set. If a write to this register attempts to set both, then SE is set
and WE is cleared. However, avoid writing ones to both bit locations because this "11" case is reserved.
0 Windowing mode is not selected.
1 Windowing mode is selected.
13
Reserved
This field is reserved.
This read-only field is reserved and always has the value 0.
12
PMODE
Power Mode Select
0 Low Speed (LS) comparison mode is selected.
1 High Speed (HS) comparison mode is selected, in VLPx mode, or Stop mode switched to Low Speed
(LS) mode.
Table continues on the next page...
Chapter 37 Comparator (CMP)
Kinetis KE1xZ256 Sub-Family Reference Manual, Rev. 3, 07/2018
NXP Semiconductors 801